docs: def _check_instance_relationships_for_delete(self, instance):
          """
          Ensure we are authorized to delete this and all cascaded resources.
  
          :param instance: The instance to check the relationships of.
          """
          check_permission(instance, None, Permissions.DELETE)
          for rel_key, rel in instance.__mapper__.relationships.items():
              check_permission(instance, rel_key, Permissions.EDIT)
  
              if rel.cascade.delete:
                  if rel.direction == MANYTOONE:
                      related = getattr(instance, rel_key)
                      self._check_instance_relationships_for_delete(related)
                  else:
                      instances = getattr(instance, rel_key)
                      for to_check in instances:
                          self._check_instance_relationships_for_delete(to_check)